| 摘要 |
<p>Compounds of formula: <IMAGE> wherein W is a substituted pyridinyl or substituted pyrimidinyl group linked to A by any one of its ring carbon atoms; A is either an oxygen atom of S(O)n, wherein n is 0, 1 or 2; X, Y and Z, which are the same of different, are hydrogen or halogen atoms, or hydroxy, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted aryl, optionally substituted alkynyl, optionally substituted alkoxy, optionally substituted alkylthio, optionally substituted aryloxy, optionally substituted arylalkoxy, optionally substituted acyloxy, optionally substituted amino, optionally substituted acylamino, nitro, cyano, -CO2R<3>, -CONR<4>R<5>, -COR<6> or -S(O)mR<7> (wherein m is 0, 1 or 2) groups, or any two of the groups X, Y and Z, when they are in adjacent positions on the phenyl ring, join to form a fused ring, either aromatic or aliphatic, optionally containing one or more heteroatoms; R<1> is optionally substituted alkyl; provided that when W is 5-trifluoromethylpyridin- 2-yl, A is oxygen, X is hydrogen, and R<1> is methyl, Y and Z are not both hydrogen, Y is not F, Cl, methyl, nitro, 5-CF3, 4-(CH3)2N if Z is hydrogen and Y and Z together are not 3-nitro-5-chloro, 3,5-dinitro, 4,5-dimethoxy or 4,5-methylenedioxy; and R<3>, R<4>, R<5>, R<6> and R<7> which are same or different, are hydrogen atoms or optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted aryl, or optionally substituted aralkyl groups, are intermediates in the production of agriculturally useful acrylic acid derivatives.</p> |
